11-07-2007, 12:47 PM
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#5
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Join Date: Nov 2007
Location: Riegelwood, North Carolina
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Re: RPD's verses MPG; 99 Sierra
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Originally Posted by maxwedge
Normal, the filter was doing it's job. What actually is your question? Is the mileage radically different or the issue with the perceived rpm change?
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Just curious about the lower RPMs appearantly resulting in higher MPG following change from GOGAS to Shell brand gasoline, i.e. 10% fewer RPMs resulting in approx 10% higher MPG. Sounds impossible to me too. Perhaps my driving habits have changed and I just haven't realized it.
As far as mentioning the fuel filter, just trying to provide any information that I thought may be pertinent.
Charlie
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